Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aeab65e209fbf20…

MALICIOUS

PDF

67.3 KB Created: 2020-12-22 18:04:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9e284eb9244beb35a63e389659cf583b SHA-1: 7a441e7419f0946a069945341fd95e320d1a3f50 SHA-256: 6aeab65e209fbf20384c58df3988cd72a1bb46787b004e1f3d4efc1eef63d0e9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO manipulation tactic. The primary URL, 'https://trafffi.ru/strik?utm_term=truck+icon+free', indicates a lure to a website. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffi.ru/strik?utm_term=truck+icon+free PDF link annotation
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/sifuwatodomenad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411916/normal_5fcb4fde1befb.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/gorozoj-jogolozefejon-nirigolatomob.pdfIn PDF document text
    • https://siminanora.weebly.com/uploads/1/3/4/6/134611077/gojulubaz_vaxurabex_wulovanope.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425908/normal_5fc8fcc06b638.pdfIn PDF document text
    • https://poxanada.weebly.com/uploads/1/3/1/4/131483305/ff92fa941ad432e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/01c32fa9-8d37-4655-b64f-33f7539bbf80/wutejuvigugiwefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aa72310-284f-452d-ba99-96ad2d439ddf/zajogejulenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bea6cb2-d1a8-41a3-b216-c370c1f768ec/the_dark_tower_book_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3191d1b8-6d38-4047-b298-74aeb7b7f3f1/pre_algebra_with_pizzazz_answers_page_150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/134a5bf2-9e11-48fb-b980-1c424343a2ac/58421228819.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/50600874795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e72123f-571f-421b-aac4-395b0688047d/cuestionario_para_test_htp.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD46 4468 bytes
SHA-256: 6b7993fb10c0494117eddab7516cd9dbe37a5bbd0af7b8f4732851be356aec16
font_01_sfnt_off0000dc8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8E 10656 bytes
SHA-256: 998ba6815ab22a3a4a2e8d56b1b3961a4ae8530b62e85cafb17f76a92c7470ca

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